746 GLACIAL FOEMATIONS OF ERIE AND OHIO BASINS. 



West Rouge River. A complicated series of bars was formed on the delta 

 of this system opposite Plymouth and extends the beach southward a half 

 mile or more beyond the north end of the ridge on the west side of the 

 stream. From Plymouth the course is west of south to Huron River about 



2 miles below Ypsilanti. This river has a broad terrace at Ypsilanti which 

 harmonizes in level with the beach and was apparently formed in con- 

 nection with it. The beach continues in a southwestward course to Saline 

 River at York and thence past Ridgeway to Raisin River, a mile west of 

 Lenawee Junction. From this stream its course is southward 5 or 6 miles, 

 then southwestward about 3 miles to Black Creek near Jasper. It then 

 bears southeastward into Ohio, entering that State about 3 miles west of 

 Metamora. 



From the Ohio-Michigan line the beach continues southeastward only 



3 or 4 miles. It then curves around to a southwest course and leads, 

 tln-ough Ai and Delta to Ridgeville Corners, where the course changes to 

 the south and the beach comes to the Maumee River about 4 miles east of 

 Defiance. Throughout its course in Michigan it lies east of the Defiance 

 moraine, but in northern Ohio it turns toward the moraine and rises to the 

 crest near Ridgeville, from which point it follows the crest to the Maumee 

 River. 



DESCRIPTION OF THE BEACH. 



The beach presents remarkable uniformity on the western shore of the 

 lake. It is comraonly a low bank, 4 to 8 feet high, with very gradual 

 slopes which are coated with gravel. The gravel extends iip to the top of 

 the bank and gives it a relief of a foot or two above the plain back of it. 

 There are very few places in which the beach differs markedly from this 

 type foi'm, and the gaps are remarkably few and small. Although a weak 

 feature so far as dimensions are concerned, its continuity and its regularity 

 are such as to arrest the attention of all who cross it. 



The deltas formed where streams entered are usually of gravelly 

 constitution and are as strong on this west shore as in any part of the lake 

 border, the rate of fall in the streams being i-apid and much gravelly 

 material being formed along their courses. 



The deltas are usually best developed back of the beach, but in places 

 they extend otit some distance into the old lake bottom. A conspicuous 

 instance of such an extension appears along Huron River. Sherzer has 



